Regulating-valve for liquid-weighing machines.



H. W. MEYER. REGULATING VALVE FOR LIQUID WBIGHING MACHINES.

APPLICATION FILED AUG. 15, 1908.

Patented May 11, 1909.

THE NORRIS PETERS ca. WASHINGTON, n c.

H. W. MEYER. REGULATING VALVE FOR LIQUID WEIGHING MACHINES.

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APPLIOATIOH FILED AUG. 15, 1908.

co.. WASHINGTON n. c.

H. W. MEYER. REGULATING VALVE FOR LIQUID WEIGHING MACHINES. APPLICATIONIILIJD AUG. '15, 1908.

921,428. Patented May 11, 1909.

3SHEETS-SHEET 3.

. r e t RE GULATING-VALVE FUR LEQUED-WEZGEZIE-TG IvIACI-IINES.

No. 921,428. Specifieatio Application filed lur'ust 1 To all whom it mayconcern:

Be it known that l, .llnilvnron lt rrnnmr MEYER, a subject of the Kingof Prussia, and resident of 2 Grunewald Allee, Zehlenderl, near Berlin,Kingdom of Prussia, Germany, have invented a new and useful Regulating-Valve for Liquid l l eighing Machines, which the following is an exactspecification.

This invention relates to a valve for regulating the supply of liquid toa weighing receptacle used for instance for weighing sugar juice and thelike. Such valves are operated mechanically by t is tilting or sinkingof the weighing receptacle as the required quantities of liquid arepassed into the same. In such regulating valves as hitherto employed thebulk of the liquid has been. fed into the receptacle while a rotatingslide valve with an opening therein left the outlet of the de-- liverypipe practically full open. After the main bulk of the liquid had passedthrough. the tilting of the receptacle caused the rotating valve to moveso as to bring a small opening therein opposite the outlet of the fluidsupply pipe. This small opening was regulated by a separate valve, sothat when the remainder of the liquid required to be filled in had beenpassed in small quantities through said small valve the valve was closedautomatically by the sinking action of the holding receptacle. Such avalve is for instance described in patent application Serial N 0. 384796filed 20th. of July 07 Heinrich 7. Meyer.

According to the present invention the regulating valve is simplified byarranging the same to govern only one outlet opening, so that anauxiliary valve is dispensed with.

According to the present invention th valve is subjected to a closingforce and th valve is held in various positions during s pply 0f theliquid by means of trip gear. The valve itself is preferably arranged inthe form of a slide valve which is adaoted to close under the action ofits own we which is stopped in various points of its clesing movement bymeans of r a gear automatically controlled by the tilting and sinking ofthe, holding receptacle for the liquid.

A method of carrying out the invention is illustrated in theaccompanying drawings, in which:

Figure 1 is a front view, Fig. 2 is a side elevation, Fig. 3 is a plan,and 4 is a front view showing the valve in full opened position. Fig. 5is a diagrammatic view of a Patented May 11, 1909.

Serial No. 448,658.

weighing machine with a valve according to the present invention.

In carrying the invention into efl'ect the supply pipe e is connected byscrewed part a" to the delivery mains from sugar tanks or the like. Thesupply pipe a opens on a substantially vertical face a and the openingis conveniently in the form of a rectangle a On the f ce a there slidesa vertically guided slide vs. l), in which an opening 6 of approximatelythe same dimensions as the opening a pro -fided. On the front of theslide 1) there is provided a bracket c carrying the pin or the like 0which is attached to any convenient device for raising the valve intoits full opened position shown in Fig. 4. In this full opened positionthe valve is held by rneans of a stop (Z formed out of a plate fixed tothe left side of the valve. The stop (Z is at its outer end bent in theform of a U and the bent round part is cut away so as to form aninclined part d" and an undercut part at its bottom side which leaves ashoulder (1". ln the raised position of the slide valve 1) the shoulder(Z is caught by means of a stop carried by trip gear mounted on theshaft f. The shaftfis mounted on fixed brackets near the side of theslide valve and is in its center part formed as a spring f so that italways tends to turn in a counter clockwise direction in 1, 3 and 4.This spring forms the returning means for the trip gear and is inclosedwithin the supporting bracket 0. A. the front end of the shaft f thereis arranged stop drum f having a part thereof of greater diameter f Thepart f as can be seen in Fig. 3, extends forward for a greater distancethan the part f. On the part f 'thore is further another step f whichprojects beyond the part f. The stop part f is arranged in. the sameplane as the bent round part of the plate (Z. It will be seen thereforethat if the parts are in a position shown in 1 and the slide valve israised, the inclined surface (1 will engage with the lefthand edge ofthe projectionf and rotate the shaft 1 in a clockwise direction againstthe action of its spring. As soon however as the nose passes over theprojection f the shaft trips and the projection f" comes un der theshoulder (Z This is the position shown in Fig. i and in this positionthe opening b of the valve registers with the opening e of the supplypipe. Higher on the valve there is arranged a stop 9 having an inclinedpart g and a horizontal part 9 As can be seen in the plan view in Fig. 3this horizontal part is adapted to project into the plane in which theprojection or stop part f carried by the shaft f lies. To the shaft fthere is fixed a lever h which engages with the receptacle 6 illustratedin Fig. 5. The receptacle 6 is shaped so that when a certain quantity ofthe liquid is filled into it, the receptacle rotates about its point ofsuspension on the lever 7 through a short distance. This rotationcontinues until a stop 8 carried by the receptacle engages with a fixedstop 9. The rotation of the receptacle through the small angle causesthe rotation of the lever h to the left in Fig. 4 and liberates theshoulder 61 from engagement with the stop f The valve 3) now sinks byits weight, which forms the closing force, and this sinking continuesuntil the shoulder 9 comes against the stop f In this position theopening of the valve is that indicated. at a in Fig. 4 by the dottedlines. The reduced quantity of liquid now asses to the receptacle tillthe exact weight lias been filled in. When this exact weight is filledin the receptacle 6 sinks so that its pivot rests on the bracket 10 andthereby a stop 11 carried by the receptacle disengages the lever h sothat the shaftf trips back under the action of the spring into theposition shown in Fig. 1. In this position the slide valve b is entirelyliberated and therefore closes the small opening a that is to say comesinto the position shown in Fig. 1.

I11 order to hold the valve parallel or exactly horizontal in theposition shown in Fig. 4 and also to limit the extent of oscillation ofthe shaft f a further shaft 7c is supported in fixed bearings 11 at theopposite side of the valve casing. The shaft it is articulated to theshaft f by means of a lever 72, connecting rod is and lever The shaft itmay, if desired, be provided with a spring tending to rotate the samealways in a counterclockwise direction, as described with reference tothe shaft f. On the front end of the shaft is there is arranged a drumhaving an eccentrically arranged part m (see Figs. 1 and 4) adapted toengage with a fixed shoulder m, when the shaft f has swung into itsextreme released position shown in Fig. 1. In this position the shoulderfrom. the step f to the part f is exactly vertical, as can be seen fromthe drawings. In addition to the eccentrically arranged part m the shaftis is provided as can be seen in Fig. 3, with a projecting part mreaching into the SELHLG plane as the turned round part 0 of the plate 0fixed to the slide valve in a similar manner to the plate d. Theprojection m is adapted to engage with a shoulder formed on the bentround part 0, as can be seen most clearly in 'Fig. 4. In this way therighthand side of the slide valve 6 is prevented from sinking lower thanthe lefthand side and the parallel opening a is secured. It will beunderstood that when the lever h is released, the step fro an theprojection m is rotated into a vertical position so as to liberate theshoulder 0.

It will be understoodthat in order to prevent the slide valve jamming inits downward movement it is desirable to arrange the up per part of thevalve motion as free as possible. To this end the valve is guided totravel in a vertical path by means of dovetail shears b engaging incorresponding openings in the valve seat. The valve seat itself does notrun exactly parallel to the bottoin of the dovetailed groove in whichthe guide shears work, so that the upper part of the valve does not beartightly on the valve seat shown exaggerated in Fig. 2. By arranging thetaper as desired the required pressure of the valve on its seat may besecured in the closed position.

It will be understood that the modification described above is only anillustration of one convenient method of constructing the regulatingsupply valve for liquid weighing inachines according to the presentinvention.

I claim 1. In combination a rotatably mounted container adapted whenpartially full to rotate, a pivotally mounted lever carrying saidcontainer, a valve subjected to a closing force, trip gear holding saidvalve open against its closing force, and stops on the containercoacting with said trip gear to partially release the same on rotationof the container and to completely release the same when said containersinks and the supporting lever oscillates.

2. In combination a liquid supply pipe, a controlling valve thereforsubjected to a closing force, trip gear regulating the opening of saidvalve against its closing force, comprising a rotatable shaft carrying aplurality of stops, adapted by a partial rotation of the shaft to comesuccessively into operation, a plurality of stops carried by the valveand coacting with said stops on the rotatable shaft in differentpositions of the travel of the valve under the action of its closingforce.

3. In combination a supply pipe, a slide valve subjected to a closingforce controlling the opening of said pipe, trip gear for holding saidvalve in different positions against its closing force, comprising arotatable shaft supported at one side of said valve and in fixedbearing, a plurality of stops on said shaft, stops on the valve coactingwith said stops on the shaft, a shaft arranged on the other side of saidvalve and having its rotation limited, and means for articulating saidshafts to move together.

4. In combinationa sup ly pipe opening onto a vertical face, a valve sidable vertically on said face under the action of its weight to closesaid pipe, stops carried by said valve, a trip gear for regulating theopening of said valve comprising shafts supported near the valve at eachside and articulated to rotate together, stops carried by the shafts andcoacting with the valve at each side to retain the same in a parallelopened position.

5. In combination a supply pipe, a slide valve controlling the outlet ofsaid pipe and subjected to a closing force, stops carriet by said valvein different planes and at different positions in the direction ofmotion of said valve, a movable member carrying stops adapted to coactsuccessively ith different stops on the valve so as to retain the samein position with different openings, said movable stops being arrangedto pass entirely out of engagement with the valve for the purpose ofenabling closin of the same.

6. In combination a supply pipe, a valve controlling the outlet of saidpipe and subjeeted to a closing force, stops carried by said valve indifferent planes and at different positions in the direction of motionof sair valve, a shaft supported near the side of said. valve, stopscarried by said shaft and coacting in different points in the rotationof the shaft with different stops on the slide valve, and in oneposition adapted to entirely release said slide valve, for the purposeset forth.

7. in opening forming a valve seat a slide valve movable over said seat,dove-tailed shear pieces on said valve for guiding the same in a fixedplane, said fixed plane being inclined slightly at from the valve seatin the opened position of the valve, and means for automatically holdingsaid valve open in various positions as required against the action of aclosing force.

in witness whereof I have hereunto set my hand in the oresence of twoWitnesses.

HEINRICH WILHELM Mlll'l llt,

combination, a liquid supply pipe a'l itnesses HENRY HAsPER, ARTHURSOHROEDER.

onto a substantially vertical face

